CVE-2019-12384 : Exploit Details and Defense Strategies

FasterXML jackson-databind versions 2.x prior to 2.9.9.1 may be vulnerable to multiple attacks if they fail to prevent the inclusion of the logback-core class during polymorphic deserialization. The severity of the impact depends on the specific classpath contents, potentially leading to the execution of remote code.

Understanding CVE-2019-12384

This CVE involves vulnerabilities in FasterXML jackson-databind versions 2.x before 2.9.9.1 that could allow attackers to exploit the failure to block the logback-core class during polymorphic deserialization.

What is CVE-2019-12384?

CVE-2019-12384 is a security vulnerability in FasterXML jackson-databind versions 2.x before 2.9.9.1 that could result in remote code execution due to improper handling of class inclusion during deserialization.

The Impact of CVE-2019-12384

The impact of this vulnerability can vary based on the contents of the classpath, potentially allowing attackers to execute remote code and carry out various attacks.

Technical Details of CVE-2019-12384

FasterXML jackson-databind versions 2.x before 2.9.9.1 are susceptible to the following:

Vulnerability Description

Failure to prevent the inclusion of the logback-core class during polymorphic deserialization

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Version: Not applicable

Exploitation Mechanism

Attackers can exploit the vulnerability by manipulating the classpath contents to execute remote code

Mitigation and Prevention

To address CVE-2019-12384, consider the following steps:

Immediate Steps to Take

Update FasterXML jackson-databind to version 2.9.9.1 or later
Monitor for any signs of unauthorized access or unusual system behavior

Long-Term Security Practices

Regularly update software and libraries to the latest versions
Implement proper input validation and secure coding practices

Patching and Updates

Apply patches provided by the vendor to mitigate the vulnerability